Add full support for SSH forwarding

I wanted to create a SSH (not PuTTY nor SSH Shell) connection so I can ssh into the remote host that I cannot reach directly. From the settings page I can see that I can specify host, host port, local IP, port and remote port. The one thing that is missing is the remote host IP that the session is forwarded to (see http://www.cl.cam.ac.uk/research/dtg/attarchive/vnc/sshvnc.html).

So in essence I can only tunnel my ssh connection (which is obviously useless) but not remotely forward it.

Thanks